Operating empty weight: Difference between revisions
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{{Short description|Aircraft weight without fuel or payload}} |
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'''Operating empty weight''' ('OEW') or 'Basic operating weight' or 'Empty Operating Weight' ''as is most commonly known is the standard basic weight for any particular series or any particular configuration. The aircraft is periodically weighed and its weight is listed with each structural modification order, or any configuration order which may alter the 'Empty Operating weight.' ''The EOW only includes all fluids necessary for operation such as [[engine oil]], [[engine coolant]], [[water]], [[hydraulic fluid]]and [[the unusable fuel volume as calculated]] and then any extra fixed operator items and optional equipment required for flight. From there, 'any' weight 'Added' to the aircraft is the Total Payload, above the EOW, which consists of (a)Cargo (b)luggage (c) Passengers and Crew (d) stores (e) service load such as meals and beverages (f) Fuel load.'' |
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{{Refimprove|date=February 2019}} |
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The operating empty weight (OEW) is basically the sum of the [[manufacturer's empty weight]] (MEW), standard items (SI), and operator items (OI). all additional 'weight' added is computed for weight, Arm, moment calculations to determine the center of gravity. |
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'''Empty weight''' (EW) is the sum of the ‘as built’ [[manufacturer's empty weight]] (MEW), plus any standard items (SI) plus any operator items (OI), EW = MEW + SI + OI. The EW is calculated for each aircraft series and each unique configuration of an aircraft and is confirmed by periodically weighing it. |
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The "'''Operating empty weight'''" (OEW) is the sum of the empty weight and the crew plus their baggage. |
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Standard items include all structural modification or configuration orders that may have altered the MEW, including all fluids necessary for operation such as [[engine oil]], [[engine coolant]], [[water]], [[hydraulic fluid]] and [[unusable fuel]]. |
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OEW = MEW + SI + OI |
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Operator items include fixed, optional equipment added by the operator for service reasons. |
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The weight added to the aircraft above its OEW for a given flight is variable and includes fuel for the flight and the [[cargo]]. Cargo depends upon the type of aircraft; i.e., passengers plus baggage for a transport or commuter airplane, materiel for a cargo airplane, stores for fighters/bombers and service loads such as meals and beverages. Fuel and cargo weights may alter the centre of gravity and flight performance, and require careful calculation before each flight. |
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| ⚫ | Aircraft purchase price is a |
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| ⚫ | Aircraft purchase price by type is a close [[linear function]] of EW.<ref>{{cite web|author=R. K. Nangia |title=Operations and aircraft design towards greener civil aviation using air-to-air refuelling |url=http://www.greenerbydesign.org.uk/_FILES/publications/3088.pdf |work=The Aeronautical Journal |publisher=[[Royal Aeronautical Society]] |date=November 2006 |url-status=dead |archiveurl=https://web.archive.org/web/20131021064242/http://www.greenerbydesign.org.uk/_FILES/publications/3088.pdf |archivedate=October 21, 2013 }}</ref><ref>{{cite web |date= March 13, 2010 |title= An aircraft worth its weight in gold? |author= Javier Irastorza Mediavilla |url= http://theblogbyjavier.com/2010/03/13/an-aircraft-worth-its-weight-in-gold/}}</ref> |
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==See also== |
==See also== |
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* [[Maximum takeoff weight]] |
* [[Maximum takeoff weight]] |
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* [[Aircraft gross weight]] |
* [[Aircraft gross weight]] |
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*[[Zero-fuel weight]] |
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==References== |
==References== |
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Latest revision as of 18:33, 9 April 2024
 | This article needs additional citations for verification. (February 2019) |
Empty weight (EW) is the sum of the ‘as built’ manufacturer's empty weight (MEW), plus any standard items (SI) plus any operator items (OI), EW = MEW + SI + OI. The EW is calculated for each aircraft series and each unique configuration of an aircraft and is confirmed by periodically weighing it. The "Operating empty weight" (OEW) is the sum of the empty weight and the crew plus their baggage.
Standard items include all structural modification or configuration orders that may have altered the MEW, including all fluids necessary for operation such as engine oil, engine coolant, water, hydraulic fluid and unusable fuel. Operator items include fixed, optional equipment added by the operator for service reasons.
The weight added to the aircraft above its OEW for a given flight is variable and includes fuel for the flight and the cargo. Cargo depends upon the type of aircraft; i.e., passengers plus baggage for a transport or commuter airplane, materiel for a cargo airplane, stores for fighters/bombers and service loads such as meals and beverages. Fuel and cargo weights may alter the centre of gravity and flight performance, and require careful calculation before each flight.
Aircraft purchase price by type is a close linear function of EW.[1][2]
See also[edit]
References[edit]
- ^ R. K. Nangia (November 2006). "Operations and aircraft design towards greener civil aviation using air-to-air refuelling" (PDF). The Aeronautical Journal. Royal Aeronautical Society. Archived from the original (PDF) on October 21, 2013.
- ^ Javier Irastorza Mediavilla (March 13, 2010). "An aircraft worth its weight in gold?".
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